var status = 0;
var selectionLog = [];

function start() {
    status = -1;
    action(1, 0, 0)
}

function action(c, b, a) {
    if (status == 0 && c == 0) {
        cm.dispose();
        return
    }
    if (c == 1) {
        status++
    } else {
        status--
    }
    selectionLog[status] = a;
    cm.sendNext("每天都要好好学习！");
    cm.dispose()
};